Le Deutéronome 28:9 Halakha : Mishneh Torah, Human Dispositions, Mishneh Torah, Positive Mitzvot, Gray Matter II & Chafetz Chaim

One who controls himself with increased restrictions, and distances himself even from the mean tendency,²Shabbat, 30-31. G. a little one way or a little the other way, is called devout. How may one do it? One who will distance himself from the extreme point of arrogance and become exceedingly humble is called devout for, this is the tendency of piety. If one distances himself to the mean point only and practices meekness he is called a wise man for, this is the tendency of wisdom. A like pathway exists in all the rest of the tendencies. The ancient devotees diverged their tendencies from the middle-path facing the two extremes; some tendency they bent opposite to the last extreme and some tendency they bent opposite the first extreme. This is more than being within the limits of the law.³Baba Mezi’a 30a. G. As for us, we are charged to walk in these middle-paths, which are the good and straight paths, even as it is said: "And thou shalt walk in His ways" (Deut. 28 9).

In explaining this commandment the sages taught thus: Even as He is called gracious, be thou gracious; even as He is called merciful, be thou merciful; even as He is called holy, be thou holy.⁴Shabbat, 133b.; Sotah, 14a. C. In this wise did the prophets attribute to God all such terms as long-suffering, abundant in benificence, just and right, perfect, mighty and powerful and others like these, to proclaim that they are good and straight paths, and that man is obligated to lead himself in them, and to be like unto Him in proportion to his power.

To imitate His good and upright ways, as it is said, “And thou shalt walk in His ways” (Deut. 28:9).